A row of 14 J-10B fighters at the Chengdu Aircraft Corporation airfield.

The first J-10B production batch will be powered by Russian Saturn
AL-31FN turbofans. Though an example powered by a Shenyang-Liming WS-10A
turbofan emerged in July 2011, there is speculation that either
insufficient performance or production may be delaying its adoption.

In April 2014 an Asian government source told IHS Jane's that in
early 2014 the PLAAF had 220 J-10A and twin-seat J-10BS fighters, with
this number estimated to increase to 400 by 2020. This could indicate an
annual production rate of about 30 advanced J-10s.

These are from or for the so far not confirmed 2. Division: Agreed not
all have their serials applied and they are blurred, but they are 100 %
for sure not the already known four-digit 103x-serials of the
prototypes.

... even more these too have yellow five-digit operational serials ending with 0,2,6 and 8; however blurred again !